A FIFOQueue that supports batching variable-sized tensors by padding.

Inherits From: QueueBase

A PaddingFIFOQueue may contain components with dynamic shape, while also supporting dequeue_many. See the constructor for more details.

See tf.queue.QueueBase for a description of the methods on this class.

capacity An integer. The upper bound on the number of elements that may be stored in this queue.
dtypes A list of DType objects. The length of dtypes must equal the number of tensors in each queue element.
shapes A list of TensorShape objects, with the same length as dtypes. Any dimension in the TensorShape containing value None is dynamic and allows values to be enqueued with variable size in that dimension.
names (Optional.) A list of string naming the components in the queue with the same length as dtypes, or None. If specified the dequeue methods return a dictionary with the names as keys.
shared_name (Optional.) If non-empty, this queue will be shared under the given name across multiple sessions.
name Optional name for the queue operation.

ValueError If shapes is not a list of shapes, or the lengths of dtypes and shapes do not match, or if names is specified and the lengths of dtypes and names do not match.

dtypes The list of dtypes for each component of a queue element.
name The name of the underlying queue.
names The list of names for each component of a queue element.
queue_ref The underlying queue reference.
shapes The list of shapes for each component of a queue element.



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Closes this queue.

This operation signals that no more elements will be enqueued in the given queue. Subsequent enqueue and enqueue_many operations will fail. Subsequent dequeue and dequeue_many operations will continue to succeed if sufficient elements remain in the queue. Subsequently dequeue and dequeue_many operations that would otherwise block waiting for more elements (if close hadn't been called) will now fail immediately.

If cancel_pending_enqueues is True, all pending requests will also be canceled.

cancel_pending_enqueues (Optional.) A boolean, defaulting to False (described above).
name A name for the operation (optional).

The operation that closes the queue.


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Dequeues one element from this queue.

If the queue is empty when this operation executes, it will block until there is an element to dequeue.

At runtime, this operation may raise an error if the queue is tf.QueueBase.close before or during its execution. If the queue is closed, the queue is empty, and there are no pending enqueue operations that can fulfill this request, tf.errors.OutOfRangeError will be raised. If the session is tf.Session.close,